EP 0245699 A2 19871119 - Method and apparatus for making a filter from a material for a filter element.
Title (en)
Method and apparatus for making a filter from a material for a filter element.
Title (de)
Verfahren und Apparat zum Anfertigen von Filtern aus einem dafür geeigneten Material.
Title (fr)
Procédé et appareil pour la fabrication de filtres à partir du matériau approprié.
Publication
Application
Priority
- JP 9923686 A 19860428
- JP 10274586 A 19860502
- JP 10274686 A 19860502
Abstract (en)
An apparatus makes a filter from a material for a filter element automatically and quickly. The filter made by the present apparatus has a plurality of wavy portions which are provided in such a manner that a plurality of wavy portions makes a circle. The apparatus employs a contracting apparatus for contracting a continuously corrugated strip of a material for filter element in such a manner that a distance between adjacent ridges of the corrugated strip is reduced so that the corrugated strip becomes the wavy portion of the filter. The apparatus also employs a rounding apparatus for rounding the continuously corrugated strip in such a manner that both ends of the strip are connected each other so that the wavy portions made from the corrugated strip make a circle. The apparatus further employs a shaping apparatus for shaping the rounded continuously corrugated strip so that the rounded strip becomes the filter.
IPC 1-7
IPC 8 full level
B01D 25/12 (2006.01); B31D 5/00 (2006.01)
CPC (source: EP KR US)
B01D 25/12 (2013.01 - KR); B31D 5/0082 (2013.01 - EP US); Y10S 493/941 (2013.01 - EP US); Y10T 156/102 (2015.01 - EP US); Y10T 156/1038 (2015.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0245699 A2 19871119; EP 0245699 A3 19891025; EP 0245699 B1 19930120; AU 573473 B2 19880609; AU 7176987 A 19871105; DE 3783649 D1 19930304; DE 3783649 T2 19930513; KR 870009745 A 19871130; KR 900007857 B1 19901022; US 4747816 A 19880531
DOCDB simple family (application)
EP 87106187 A 19870428; AU 7176987 A 19870416; DE 3783649 T 19870428; KR 870004012 A 19870425; US 4100587 A 19870421